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13078163 = 71868309
BaseRepresentation
bin110001111000…
…111010010011
3220121102212102
4301320322103
511322000123
61144151015
7216106520
oct61707223
926542772
1013078163
1174228aa
12446846b
13292b977
141a46147
151235028
hexc78e93

13078163 has 4 divisors (see below), whose sum is σ = 14946480. Its totient is φ = 11209848.

The previous prime is 13078133. The next prime is 13078171. The reversal of 13078163 is 36187031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13078163 - 28 = 13077907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13078103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934148 + ... + 934161.

It is an arithmetic number, because the mean of its divisors is an integer number (3736620).

Almost surely, 213078163 is an apocalyptic number.

13078163 is a deficient number, since it is larger than the sum of its proper divisors (1868317).

13078163 is an equidigital number, since it uses as much as digits as its factorization.

13078163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868316.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 13078163 is about 3616.3742892571. The cubic root of 13078163 is about 235.6037771202.

The spelling of 13078163 in words is "thirteen million, seventy-eight thousand, one hundred sixty-three".

Divisors: 1 7 1868309 13078163